diff options
Diffstat (limited to 'debian/mp4v2/mp4v2-2.0.0~dfsg0/src/mp4atom.cpp')
| -rw-r--r-- | debian/mp4v2/mp4v2-2.0.0~dfsg0/src/mp4atom.cpp | 1017 |
1 files changed, 0 insertions, 1017 deletions
diff --git a/debian/mp4v2/mp4v2-2.0.0~dfsg0/src/mp4atom.cpp b/debian/mp4v2/mp4v2-2.0.0~dfsg0/src/mp4atom.cpp deleted file mode 100644 index 520cbc87..00000000 --- a/debian/mp4v2/mp4v2-2.0.0~dfsg0/src/mp4atom.cpp +++ /dev/null @@ -1,1017 +0,0 @@ -/* - * The contents of this file are subject to the Mozilla Public - * License Version 1.1 (the "License"); you may not use this file - * except in compliance with the License. You may obtain a copy of - * the License at http://www.mozilla.org/MPL/ - * - * Software distributed under the License is distributed on an "AS - * IS" basis, WITHOUT WARRANTY OF ANY KIND, either express or - * implied. See the License for the specific language governing - * rights and limitations under the License. - * - * The Original Code is MPEG4IP. - * - * The Initial Developer of the Original Code is Cisco Systems Inc. - * Portions created by Cisco Systems Inc. are - * Copyright (C) Cisco Systems Inc. 2001 - 2004. All Rights Reserved. - * - * 3GPP features implementation is based on 3GPP's TS26.234-v5.60, - * and was contributed by Ximpo Group Ltd. - * - * Portions created by Ximpo Group Ltd. are - * Copyright (C) Ximpo Group Ltd. 2003, 2004. All Rights Reserved. - * - * Portions created by Adnecto d.o.o. are - * Copyright (C) Adnecto d.o.o. 2005. All Rights Reserved - * - * Contributor(s): - * Dave Mackie dmackie@cisco.com - * Alix Marchandise-Franquet alix@cisco.com - * Ximpo Group Ltd. mp4v2@ximpo.com - * Danijel Kopcinovic danijel.kopcinovic@adnecto.net - */ - -#include "src/impl.h" - -namespace mp4v2 { namespace impl { - -/////////////////////////////////////////////////////////////////////////////// - -MP4AtomInfo::MP4AtomInfo(const char* name, bool mandatory, bool onlyOne) -{ - m_name = name; - m_mandatory = mandatory; - m_onlyOne = onlyOne; - m_count = 0; -} - -MP4Atom::MP4Atom(MP4File& file, const char* type) - : m_File(file) -{ - SetType(type); - m_unknownType = false; - m_start = 0; - m_end = 0; - m_largesizeMode = false; - m_size = 0; - m_pParentAtom = NULL; - m_depth = 0xFF; -} - -MP4Atom::~MP4Atom() -{ - uint32_t i; - - for (i = 0; i < m_pProperties.Size(); i++) { - delete m_pProperties[i]; - } - for (i = 0; i < m_pChildAtomInfos.Size(); i++) { - delete m_pChildAtomInfos[i]; - } - for (i = 0; i < m_pChildAtoms.Size(); i++) { - delete m_pChildAtoms[i]; - } -} - -MP4Atom* MP4Atom::CreateAtom( MP4File &file, MP4Atom* parent, const char* type ) -{ - MP4Atom* atom = factory( file, parent, type ); - ASSERT( atom ); - return atom; -} - -// generate a skeletal self - -void MP4Atom::Generate() -{ - uint32_t i; - - // for all properties - for (i = 0; i < m_pProperties.Size(); i++) { - // ask it to self generate - m_pProperties[i]->Generate(); - } - - // for all mandatory, single child atom types - for (i = 0; i < m_pChildAtomInfos.Size(); i++) { - if (m_pChildAtomInfos[i]->m_mandatory - && m_pChildAtomInfos[i]->m_onlyOne) { - - // create the mandatory, single child atom - MP4Atom* pChildAtom = - CreateAtom(m_File, this, m_pChildAtomInfos[i]->m_name); - - AddChildAtom(pChildAtom); - - // and ask it to self generate - pChildAtom->Generate(); - } - } -} - -MP4Atom* MP4Atom::ReadAtom(MP4File& file, MP4Atom* pParentAtom) -{ - uint8_t hdrSize = 8; - uint8_t extendedType[16]; - - uint64_t pos = file.GetPosition(); - - log.verbose1f("\"%s\": pos = 0x%" PRIx64, file.GetFilename().c_str(), pos); - - uint64_t dataSize = file.ReadUInt32(); - - char type[5]; - file.ReadBytes((uint8_t*)&type[0], 4); - type[4] = '\0'; - - // extended size - const bool largesizeMode = (dataSize == 1); - if (dataSize == 1) { - dataSize = file.ReadUInt64(); - hdrSize += 8; - file.Check64BitStatus(type); - } - - // extended type - if (ATOMID(type) == ATOMID("uuid")) { - file.ReadBytes(extendedType, sizeof(extendedType)); - hdrSize += sizeof(extendedType); - } - - if (dataSize == 0) { - // extends to EOF - dataSize = file.GetSize() - pos; - } - - dataSize -= hdrSize; - - log.verbose1f("\"%s\": type = \"%s\" data-size = %" PRIu64 " (0x%" PRIx64 ") hdr %u", - file.GetFilename().c_str(), type, dataSize, dataSize, hdrSize); - - if (pos + hdrSize + dataSize > pParentAtom->GetEnd()) { - log.errorf("%s: \"%s\": invalid atom size, extends outside parent atom - skipping to end of \"%s\" \"%s\" %" PRIu64 " vs %" PRIu64, - __FUNCTION__, file.GetFilename().c_str(), pParentAtom->GetType(), type, - pos + hdrSize + dataSize, - pParentAtom->GetEnd()); - log.verbose1f("\"%s\": parent %s (%" PRIu64 ") pos %" PRIu64 " hdr %d data %" PRIu64 " sum %" PRIu64, - file.GetFilename().c_str(), pParentAtom->GetType(), - pParentAtom->GetEnd(), - pos, - hdrSize, - dataSize, - pos + hdrSize + dataSize); - - // skip to end of atom - dataSize = pParentAtom->GetEnd() - pos - hdrSize; - } - - MP4Atom* pAtom = CreateAtom(file, pParentAtom, type); - // pAtom->SetFile(pFile); - pAtom->SetStart(pos); - pAtom->SetEnd(pos + hdrSize + dataSize); - pAtom->SetLargesizeMode(largesizeMode); - pAtom->SetSize(dataSize); - if (ATOMID(type) == ATOMID("uuid")) { - pAtom->SetExtendedType(extendedType); - } - if (pAtom->IsUnknownType()) { - if (!IsReasonableType(pAtom->GetType())) { - log.warningf("%s: \"%s\": atom type %s is suspect", __FUNCTION__, file.GetFilename().c_str(), - pAtom->GetType()); - } else { - log.verbose1f("\"%s\": Info: atom type %s is unknown", file.GetFilename().c_str(), - pAtom->GetType()); - } - - if (dataSize > 0) { - pAtom->AddProperty( - new MP4BytesProperty(*pAtom, "data", dataSize)); - } - } - - pAtom->SetParentAtom(pParentAtom); - - try { - pAtom->Read(); - } - catch (Exception* x) { - // delete atom and rethrow so we don't leak memory. - delete pAtom; - throw x; - } - - - return pAtom; -} - -bool MP4Atom::IsReasonableType(const char* type) -{ - // Unwound this. Pricy when called a lot. - if( isalnum((unsigned char) type[0])) { - if( isalnum((unsigned char) type[1])) { - if( isalnum((unsigned char) type[2])) { - if( isalnum((unsigned char) type[3]) || type[3] == ' ' ) { - return true; - } - } - } - } - - return false; -} - -// generic read -void MP4Atom::Read() -{ - if (ATOMID(m_type) != 0 && m_size > 1000000) { - log.verbose1f("%s: \"%s\": %s atom size %" PRIu64 " is suspect", __FUNCTION__, - m_File.GetFilename().c_str(), m_type, m_size); - } - - ReadProperties(); - - // read child atoms, if we expect there to be some - if (m_pChildAtomInfos.Size() > 0) { - ReadChildAtoms(); - } - - Skip(); // to end of atom -} - -void MP4Atom::Skip() -{ - if (m_File.GetPosition() != m_end) { - log.verbose1f("\"%s\": Skip: %" PRIu64 " bytes", - m_File.GetFilename().c_str(), m_end - m_File.GetPosition()); - } - m_File.SetPosition(m_end); -} - -MP4Atom* MP4Atom::FindAtom(const char* name) -{ - if (!IsMe(name)) { - return NULL; - } - - if (!IsRootAtom()) { - log.verbose1f("\"%s\": FindAtom: matched %s", - GetFile().GetFilename().c_str(), name); - - name = MP4NameAfterFirst(name); - - // I'm the sought after atom - if (name == NULL) { - return this; - } - } - - // else it's one of my children - return FindChildAtom(name); -} - -bool MP4Atom::FindProperty(const char *name, - MP4Property** ppProperty, uint32_t* pIndex) -{ - if (!IsMe(name)) { - return false; - } - - if (!IsRootAtom()) { - log.verbose1f("\"%s\": FindProperty: matched %s", - GetFile().GetFilename().c_str(), name); - - name = MP4NameAfterFirst(name); - - // no property name given - if (name == NULL) { - return false; - } - } - - return FindContainedProperty(name, ppProperty, pIndex); -} - -bool MP4Atom::IsMe(const char* name) -{ - if (name == NULL) { - return false; - } - - // root atom always matches - if (!strcmp(m_type, "")) { - return true; - } - - // check if our atom name is specified as the first component - if (!MP4NameFirstMatches(m_type, name)) { - return false; - } - - return true; -} - -MP4Atom* MP4Atom::FindChildAtom(const char* name) -{ - uint32_t atomIndex = 0; - - // get the index if we have one, e.g. moov.trak[2].mdia... - (void)MP4NameFirstIndex(name, &atomIndex); - - // need to get to the index'th child atom of the right type - for (uint32_t i = 0; i < m_pChildAtoms.Size(); i++) { - if (MP4NameFirstMatches(m_pChildAtoms[i]->GetType(), name)) { - if (atomIndex == 0) { - // this is the one, ask it to match - return m_pChildAtoms[i]->FindAtom(name); - } - atomIndex--; - } - } - - return NULL; -} - -bool MP4Atom::FindContainedProperty(const char *name, - MP4Property** ppProperty, uint32_t* pIndex) -{ - uint32_t numProperties = m_pProperties.Size(); - uint32_t i; - // check all of our properties - for (i = 0; i < numProperties; i++) { - if (m_pProperties[i]->FindProperty(name, ppProperty, pIndex)) { - return true; - } - } - - // not one of our properties, - // presumably one of our children's properties - // check child atoms... - - // check if we have an index, e.g. trak[2].mdia... - uint32_t atomIndex = 0; - (void)MP4NameFirstIndex(name, &atomIndex); - - // need to get to the index'th child atom of the right type - for (i = 0; i < m_pChildAtoms.Size(); i++) { - if (MP4NameFirstMatches(m_pChildAtoms[i]->GetType(), name)) { - if (atomIndex == 0) { - // this is the one, ask it to match - return m_pChildAtoms[i]->FindProperty(name, ppProperty, pIndex); - } - atomIndex--; - } - } - - log.verbose1f("\"%s\": FindProperty: no match for %s", - GetFile().GetFilename().c_str(), name); - return false; -} - -void MP4Atom::ReadProperties(uint32_t startIndex, uint32_t count) -{ - uint32_t numProperties = min(count, m_pProperties.Size() - startIndex); - - // read any properties of the atom - for (uint32_t i = startIndex; i < startIndex + numProperties; i++) { - - m_pProperties[i]->Read(m_File); - - if (m_File.GetPosition() > m_end) { - log.verbose1f("ReadProperties: insufficient data for property: %s pos 0x%" PRIx64 " atom end 0x%" PRIx64, - m_pProperties[i]->GetName(), - m_File.GetPosition(), m_end); - - ostringstream oss; - oss << "atom '" << GetType() << "' is too small; overrun at property: " << m_pProperties[i]->GetName(); - throw new Exception( oss.str().c_str(), __FILE__, __LINE__, __FUNCTION__ ); - } - - MP4LogLevel thisVerbosity = - (m_pProperties[i]->GetType() == TableProperty) ? - MP4_LOG_VERBOSE2 : MP4_LOG_VERBOSE1; - - if (log.verbosity >= thisVerbosity) { - // log.printf(thisVerbosity,"Read: "); - m_pProperties[i]->Dump(0, true); - } - } -} - -void MP4Atom::ReadChildAtoms() -{ - bool this_is_udta = ATOMID(m_type) == ATOMID("udta"); - - log.verbose1f("\"%s\": of %s", m_File.GetFilename().c_str(), m_type[0] ? m_type : "root"); - for (uint64_t position = m_File.GetPosition(); - position < m_end; - position = m_File.GetPosition()) { - // make sure that we have enough to read at least 8 bytes - // size and type. - if (m_end - position < 2 * sizeof(uint32_t)) { - // if we're reading udta, it's okay to have 4 bytes of 0 - if (this_is_udta && - m_end - position == sizeof(uint32_t)) { - uint32_t mbz = m_File.ReadUInt32(); - if (mbz != 0) { - log.warningf("%s: \"%s\": In udta atom, end value is not zero %x", __FUNCTION__, - m_File.GetFilename().c_str(), mbz); - } - continue; - } - // otherwise, output a warning, but don't care - log.warningf("%s: \"%s\": In %s atom, extra %" PRId64 " bytes at end of atom", __FUNCTION__, - m_File.GetFilename().c_str(), m_type, (m_end - position)); - for (uint64_t ix = 0; ix < m_end - position; ix++) { - (void)m_File.ReadUInt8(); - } - continue; - } - MP4Atom* pChildAtom = MP4Atom::ReadAtom(m_File, this); - - AddChildAtom(pChildAtom); - - MP4AtomInfo* pChildAtomInfo = FindAtomInfo(pChildAtom->GetType()); - - // if child atom is of known type - // but not expected here print warning - if (pChildAtomInfo == NULL && !pChildAtom->IsUnknownType()) { - log.verbose1f("%s: \"%s\": In atom %s unexpected child atom %s", __FUNCTION__, - m_File.GetFilename().c_str(), GetType(), pChildAtom->GetType()); - } - - // if child atoms should have just one instance - // and this is more than one, print warning - if (pChildAtomInfo) { - pChildAtomInfo->m_count++; - - if (pChildAtomInfo->m_onlyOne && pChildAtomInfo->m_count > 1) { - log.warningf("%s: \"%s\": In atom %s multiple child atoms %s", __FUNCTION__, - m_File.GetFilename().c_str(), GetType(), pChildAtom->GetType()); - } - } - - } - - // if mandatory child atom doesn't exist, print warning - uint32_t numAtomInfo = m_pChildAtomInfos.Size(); - for (uint32_t i = 0; i < numAtomInfo; i++) { - if (m_pChildAtomInfos[i]->m_mandatory - && m_pChildAtomInfos[i]->m_count == 0) { - log.warningf("%s: \"%s\": In atom %s missing child atom %s", __FUNCTION__, - m_File.GetFilename().c_str(), GetType(), m_pChildAtomInfos[i]->m_name); - } - } - - log.verbose1f("\"%s\": finished %s", m_File.GetFilename().c_str(), m_type); -} - -MP4AtomInfo* MP4Atom::FindAtomInfo(const char* name) -{ - uint32_t numAtomInfo = m_pChildAtomInfos.Size(); - for (uint32_t i = 0; i < numAtomInfo; i++) { - if (ATOMID(m_pChildAtomInfos[i]->m_name) == ATOMID(name)) { - return m_pChildAtomInfos[i]; - } - } - return NULL; -} - -// generic write -void MP4Atom::Write() -{ - BeginWrite(); - - WriteProperties(); - - WriteChildAtoms(); - - FinishWrite(); -} - -void MP4Atom::Rewrite() -{ - if (!m_end) { - // This atom hasn't been written yet... - return; - } - - uint64_t fPos = m_File.GetPosition(); - m_File.SetPosition(GetStart()); - Write(); - m_File.SetPosition(fPos); -} - -void MP4Atom::BeginWrite(bool use64) -{ - m_start = m_File.GetPosition(); - //use64 = m_File.Use64Bits(); - if (use64) { - m_File.WriteUInt32(1); - } else { - m_File.WriteUInt32(0); - } - m_File.WriteBytes((uint8_t*)&m_type[0], 4); - if (use64) { - m_File.WriteUInt64(0); - } - if (ATOMID(m_type) == ATOMID("uuid")) { - m_File.WriteBytes(m_extendedType, sizeof(m_extendedType)); - } -} - -void MP4Atom::FinishWrite(bool use64) -{ - m_end = m_File.GetPosition(); - m_size = (m_end - m_start); - - log.verbose1f("end: type %s %" PRIu64 " %" PRIu64 " size %" PRIu64, - m_type,m_start, m_end, m_size); - //use64 = m_File.Use64Bits(); - if (use64) { - m_File.SetPosition(m_start + 8); - m_File.WriteUInt64(m_size); - } else { - ASSERT(m_size <= (uint64_t)0xFFFFFFFF); - m_File.SetPosition(m_start); - m_File.WriteUInt32(m_size); - } - m_File.SetPosition(m_end); - - // adjust size to just reflect data portion of atom - m_size -= (use64 ? 16 : 8); - if (ATOMID(m_type) == ATOMID("uuid")) { - m_size -= sizeof(m_extendedType); - } -} - -void MP4Atom::WriteProperties(uint32_t startIndex, uint32_t count) -{ - uint32_t numProperties = min(count, m_pProperties.Size() - startIndex); - - log.verbose1f("Write: \"%s\": type %s", m_File.GetFilename().c_str(), m_type); - - for (uint32_t i = startIndex; i < startIndex + numProperties; i++) { - m_pProperties[i]->Write(m_File); - - MP4LogLevel thisVerbosity = - (m_pProperties[i]->GetType() == TableProperty) ? - MP4_LOG_VERBOSE2 : MP4_LOG_VERBOSE1; - - if (log.verbosity >= thisVerbosity) { - log.printf(thisVerbosity,"Write: "); - m_pProperties[i]->Dump(0, false); - } - } -} - -void MP4Atom::WriteChildAtoms() -{ - uint32_t size = m_pChildAtoms.Size(); - for (uint32_t i = 0; i < size; i++) { - m_pChildAtoms[i]->Write(); - } - - log.verbose1f("Write: \"%s\": finished %s", m_File.GetFilename().c_str(), m_type); -} - -void MP4Atom::AddProperty(MP4Property* pProperty) -{ - ASSERT(pProperty); - m_pProperties.Add(pProperty); -} - -void MP4Atom::AddVersionAndFlags() -{ - AddProperty(new MP4Integer8Property(*this, "version")); - AddProperty(new MP4Integer24Property(*this, "flags")); -} - -void MP4Atom::AddReserved(MP4Atom& parentAtom, const char* name, uint32_t size) -{ - MP4BytesProperty* pReserved = new MP4BytesProperty(parentAtom, name, size); - pReserved->SetReadOnly(); - AddProperty(pReserved); -} - -void MP4Atom::ExpectChildAtom(const char* name, bool mandatory, bool onlyOne) -{ - m_pChildAtomInfos.Add(new MP4AtomInfo(name, mandatory, onlyOne)); -} - -uint8_t MP4Atom::GetVersion() -{ - if (strcmp("version", m_pProperties[0]->GetName())) { - return 0; - } - return ((MP4Integer8Property*)m_pProperties[0])->GetValue(); -} - -void MP4Atom::SetVersion(uint8_t version) -{ - if (strcmp("version", m_pProperties[0]->GetName())) { - return; - } - ((MP4Integer8Property*)m_pProperties[0])->SetValue(version); -} - -uint32_t MP4Atom::GetFlags() -{ - if (strcmp("flags", m_pProperties[1]->GetName())) { - return 0; - } - return ((MP4Integer24Property*)m_pProperties[1])->GetValue(); -} - -void MP4Atom::SetFlags(uint32_t flags) -{ - if (strcmp("flags", m_pProperties[1]->GetName())) { - return; - } - ((MP4Integer24Property*)m_pProperties[1])->SetValue(flags); -} - -void MP4Atom::Dump(uint8_t indent, bool dumpImplicits) -{ - if ( m_type[0] != '\0' ) { - // create list of ancestors - list<string> tlist; - for( MP4Atom* atom = this; atom; atom = atom->GetParentAtom() ) { - const char* const type = atom->GetType(); - if( type && type[0] != '\0' ) - tlist.push_front( type ); - } - - // create contextual atom-name - string can; - const list<string>::iterator ie = tlist.end(); - for( list<string>::iterator it = tlist.begin(); it != ie; it++ ) - can += *it + '.'; - if( can.length() ) - can.resize( can.length() - 1 ); - - log.dump(indent, MP4_LOG_VERBOSE1, "\"%s\": type %s (%s)", - GetFile().GetFilename().c_str(), - m_type, can.c_str() ); - } - - uint32_t i; - uint32_t size; - - // dump our properties - size = m_pProperties.Size(); - for (i = 0; i < size; i++) { - - /* skip details of tables unless we're told to be verbose */ - if (m_pProperties[i]->GetType() == TableProperty - && (log.verbosity < MP4_LOG_VERBOSE2)) { - log.dump(indent + 1, MP4_LOG_VERBOSE1, "\"%s\": <table entries suppressed>", - GetFile().GetFilename().c_str() ); - continue; - } - - m_pProperties[i]->Dump(indent + 1, dumpImplicits); - } - - // dump our children - size = m_pChildAtoms.Size(); - for (i = 0; i < size; i++) { - m_pChildAtoms[i]->Dump(indent + 1, dumpImplicits); - } -} - -uint8_t MP4Atom::GetDepth() -{ - if (m_depth < 0xFF) { - return m_depth; - } - - MP4Atom *pAtom = this; - m_depth = 0; - - while ((pAtom = pAtom->GetParentAtom()) != NULL) { - m_depth++; - ASSERT(m_depth < 255); - } - return m_depth; -} - -bool MP4Atom::GetLargesizeMode() -{ - return m_largesizeMode; -} - -void MP4Atom::SetLargesizeMode( bool mode ) -{ - m_largesizeMode = mode; -} - -bool -MP4Atom::descendsFrom( MP4Atom* parent, const char* type ) -{ - const uint32_t id = ATOMID( type ); - for( MP4Atom* atom = parent; atom; atom = atom->GetParentAtom() ) { - if( id == ATOMID(atom->GetType()) ) - return true; - } - return false; -} - -// UDTA child atom types to be constructed as MP4UdtaElementAtom. -// List gleaned from QTFF 2007-09-04. -static const char* const UDTA_ELEMENTS[] = { - "\xA9" "arg", - "\xA9" "ark", - "\xA9" "cok", - "\xA9" "com", - "\xA9" "cpy", - "\xA9" "day", - "\xA9" "dir", - "\xA9" "ed1", - "\xA9" "ed2", - "\xA9" "ed3", - "\xA9" "ed4", - "\xA9" "ed5", - "\xA9" "ed6", - "\xA9" "ed7", - "\xA9" "ed8", - "\xA9" "ed9", - "\xA9" "fmt", - "\xA9" "inf", - "\xA9" "isr", - "\xA9" "lab", - "\xA9" "lal", - "\xA9" "mak", - "\xA9" "nak", - "\xA9" "nam", - "\xA9" "pdk", - "\xA9" "phg", - "\xA9" "prd", - "\xA9" "prf", - "\xA9" "prk", - "\xA9" "prl", - "\xA9" "req", - "\xA9" "snk", - "\xA9" "snm", - "\xA9" "src", - "\xA9" "swf", - "\xA9" "swk", - "\xA9" "swr", - "\xA9" "wrt", - "Allf", - "name", - "LOOP", - "ptv ", - "SelO", - "WLOC", - NULL // must be last -}; - -MP4Atom* -MP4Atom::factory( MP4File &file, MP4Atom* parent, const char* type ) -{ - // type may be NULL only in case of root-atom - if( !type ) - return new MP4RootAtom(file); - - // construct atoms which are context-savvy - if( parent ) { - const char* const ptype = parent->GetType(); - - if( descendsFrom( parent, "ilst" )) { - if( ATOMID( ptype ) == ATOMID( "ilst" )) - return new MP4ItemAtom( file, type ); - - if( ATOMID( type ) == ATOMID( "data" )) - return new MP4DataAtom(file); - - if( ATOMID( ptype ) == ATOMID( "----" )) { - if( ATOMID( type ) == ATOMID( "mean" )) - return new MP4MeanAtom(file); - if( ATOMID( type ) == ATOMID( "name" )) - return new MP4NameAtom(file); - } - } - else if( ATOMID( ptype ) == ATOMID( "meta" )) { - if( ATOMID( type ) == ATOMID( "hdlr" )) - return new MP4ItmfHdlrAtom(file); - } - else if( ATOMID( ptype ) == ATOMID( "udta" )) { - if( ATOMID( type ) == ATOMID( "hnti" )) - return new MP4HntiAtom(file); - if( ATOMID( type ) == ATOMID( "hinf" )) - return new MP4HinfAtom(file); - for( const char* const* p = UDTA_ELEMENTS; *p; p++ ) - if( !strcmp( type, *p )) - return new MP4UdtaElementAtom( file, type ); - } - } - - // no-context construction (old-style) - switch( (uint8_t)type[0] ) { - case 'S': - if( ATOMID(type) == ATOMID("SVQ3") ) - return new MP4VideoAtom( file, type ); - if( ATOMID(type) == ATOMID("SMI ") ) - return new MP4SmiAtom(file); - break; - - case 'a': - if( ATOMID(type) == ATOMID("avc1") ) - return new MP4Avc1Atom(file); - if( ATOMID(type) == ATOMID("ac-3") ) - return new MP4Ac3Atom(file); - if( ATOMID(type) == ATOMID("avcC") ) - return new MP4AvcCAtom(file); - if( ATOMID(type) == ATOMID("alis") ) - return new MP4UrlAtom( file, type ); - if( ATOMID(type) == ATOMID("alaw") ) - return new MP4SoundAtom( file, type ); - if( ATOMID(type) == ATOMID("alac") ) - return new MP4SoundAtom( file, type ); - break; - - case 'c': - if( ATOMID(type) == ATOMID("chap") ) - return new MP4TrefTypeAtom( file, type ); - if( ATOMID(type) == ATOMID("chpl") ) - return new MP4ChplAtom(file); - if( ATOMID(type) == ATOMID("colr") ) - return new MP4ColrAtom(file); - break; - - case 'd': - if( ATOMID(type) == ATOMID("d263") ) - return new MP4D263Atom(file); - if( ATOMID(type) == ATOMID("damr") ) - return new MP4DamrAtom(file); - if( ATOMID(type) == ATOMID("dref") ) - return new MP4DrefAtom(file); - if( ATOMID(type) == ATOMID("dpnd") ) - return new MP4TrefTypeAtom( file, type ); - if( ATOMID(type) == ATOMID("dac3") ) - return new MP4DAc3Atom(file); - break; - - case 'e': - if( ATOMID(type) == ATOMID("elst") ) - return new MP4ElstAtom(file); - if( ATOMID(type) == ATOMID("enca") ) - return new MP4EncaAtom(file); - if( ATOMID(type) == ATOMID("encv") ) - return new MP4EncvAtom(file); - break; - - case 'f': - if( ATOMID(type) == ATOMID("free") ) - return new MP4FreeAtom(file); - if( ATOMID(type) == ATOMID("ftyp") ) - return new MP4FtypAtom(file); - if( ATOMID(type) == ATOMID("ftab") ) - return new MP4FtabAtom(file); - break; - - case 'g': - if( ATOMID(type) == ATOMID("gmin") ) - return new MP4GminAtom(file); - break; - - case 'h': - if( ATOMID(type) == ATOMID("hdlr") ) - return new MP4HdlrAtom(file); - if( ATOMID(type) == ATOMID("hint") ) - return new MP4TrefTypeAtom( file, type ); - if( ATOMID(type) == ATOMID("h263") ) - return new MP4VideoAtom( file, type ); - if( ATOMID(type) == ATOMID("href") ) - return new MP4HrefAtom(file); - break; - - case 'i': - if( ATOMID(type) == ATOMID("ipir") ) - return new MP4TrefTypeAtom( file, type ); - if( ATOMID(type) == ATOMID("ima4") ) - return new MP4SoundAtom( file, type ); - break; - - case 'j': - if( ATOMID(type) == ATOMID("jpeg") ) - return new MP4VideoAtom(file, "jpeg"); - break; - - case 'm': - if( ATOMID(type) == ATOMID("mdhd") ) - return new MP4MdhdAtom(file); - if( ATOMID(type) == ATOMID("mvhd") ) - return new MP4MvhdAtom(file); - if( ATOMID(type) == ATOMID("mdat") ) - return new MP4MdatAtom(file); - if( ATOMID(type) == ATOMID("mpod") ) - return new MP4TrefTypeAtom( file, type ); - if( ATOMID(type) == ATOMID("mp4a") ) - return new MP4SoundAtom( file, type ); - if( ATOMID(type) == ATOMID("mp4s") ) - return new MP4Mp4sAtom(file); - if( ATOMID(type) == ATOMID("mp4v") ) - return new MP4Mp4vAtom(file); - break; - - case 'n': - if( ATOMID(type) == ATOMID("nmhd") ) - return new MP4NmhdAtom(file); - break; - - case 'o': - if( ATOMID(type) == ATOMID("ohdr") ) - return new MP4OhdrAtom(file); - break; - - case 'p': - if( ATOMID(type) == ATOMID("pasp") ) - return new MP4PaspAtom(file); - break; - - case 'r': - if( ATOMID(type) == ATOMID("rtp ") ) - return new MP4RtpAtom(file); - if( ATOMID(type) == ATOMID("raw ") ) - return new MP4VideoAtom( file, type ); - break; - - case 's': - if( ATOMID(type) == ATOMID("s263") ) - return new MP4S263Atom(file); - if( ATOMID(type) == ATOMID("samr") ) - return new MP4AmrAtom( file, type ); - if( ATOMID(type) == ATOMID("sawb") ) - return new MP4AmrAtom( file, type ); - if( ATOMID(type) == ATOMID("sdtp") ) - return new MP4SdtpAtom(file); - if( ATOMID(type) == ATOMID("stbl") ) - return new MP4StblAtom(file); - if( ATOMID(type) == ATOMID("stsd") ) - return new MP4StsdAtom(file); - if( ATOMID(type) == ATOMID("stsz") ) - return new MP4StszAtom(file); - if( ATOMID(type) == ATOMID("stsc") ) - return new MP4StscAtom(file); - if( ATOMID(type) == ATOMID("stz2") ) - return new MP4Stz2Atom(file); - if( ATOMID(type) == ATOMID("stdp") ) - return new MP4StdpAtom(file); - if( ATOMID(type) == ATOMID("sdp ") ) - return new MP4SdpAtom(file); - if( ATOMID(type) == ATOMID("sync") ) - return new MP4TrefTypeAtom( file, type ); - if( ATOMID(type) == ATOMID("skip") ) - return new MP4FreeAtom( file, type ); - if (ATOMID(type) == ATOMID("sowt") ) - return new MP4SoundAtom( file, type ); - break; - - case 't': - if( ATOMID(type) == ATOMID("text") ) - return new MP4TextAtom(file); - if( ATOMID(type) == ATOMID("tx3g") ) - return new MP4Tx3gAtom(file); - if( ATOMID(type) == ATOMID("tkhd") ) - return new MP4TkhdAtom(file); - if( ATOMID(type) == ATOMID("tfhd") ) - return new MP4TfhdAtom(file); - if( ATOMID(type) == ATOMID("trun") ) - return new MP4TrunAtom(file); - if( ATOMID(type) == ATOMID("twos") ) - return new MP4SoundAtom( file, type ); - break; - - case 'u': - if( ATOMID(type) == ATOMID("udta") ) - return new MP4UdtaAtom(file); - if( ATOMID(type) == ATOMID("url ") ) - return new MP4UrlAtom(file); - if( ATOMID(type) == ATOMID("urn ") ) - return new MP4UrnAtom(file); - if( ATOMID(type) == ATOMID("ulaw") ) - return new MP4SoundAtom( file, type ); - break; - - case 'v': - if( ATOMID(type) == ATOMID("vmhd") ) - return new MP4VmhdAtom(file); - break; - - case 'y': - if( ATOMID(type) == ATOMID("yuv2") ) - return new MP4VideoAtom( file, type ); - break; - - default: - break; - } - - // default to MP4StandardAtom implementation - return new MP4StandardAtom( file, type ); -} - -/////////////////////////////////////////////////////////////////////////////// - -}} // namespace mp4v2::impl |